Disable Security-Enhanced Linux

Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides the mechanism for supporting access control security policies, including United States Department of Defense-style mandatory access controls (MAC).

In Fedora/Centos, SELinux is not useful and  make some softwares, services can't run. So we need disable it.

There are two way:

Temporary

setenforce 0

Forever

Edit vi /etc/selinux/config and reboot:

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

#       enforcing - SELinux security policy is enforced.

#       permissive - SELinux prints warnings instead of enforcing.

#       disabled - SELinux is fully disabled.

SELINUX=disabled

# SELINUXTYPE= type of policy in use. Possible values are:

#       targeted - Only targeted network daemons are protected.

#       strict - Full SELinux protection.

# SELINUXTYPE=targeted